NIRMALA ENG. HR. SEC. SCHOOL (CBSE), RISDI, KORBA, CG

SUMMER HOLIDAY ASSIGNMENT 2016-2017

CLASS- 12th

SUBJECT- ACCOUNTANCY

Write 50 numerical questions with solutions from each chapter:-

1. Partnership fundamentals

2. Goodwill and its valuation

3. Change in profit sharing ratio with accounting treatment of goodwill.

4. Admission of a partner.

The pattern of the question is as follows:-

a) MCQ Questions - 10

b) Short Questions - 10

c) Long Questions - 10

d) Value Based Questions - 10

e) Hots - 10

Total Questions - 50

SUBJECT- BUSINESS STUDIES

Take 25 questions with answers from each chapter-

1. Nature and significance of management.

2. Principles of management

3. Management and business environment.

4. Planning.

5. Organizing

Following are the pattern of questions:-

a) Very Short Answers - 05

b) Short Answers - 05

c) Long Answers - 05

d) Value Based + Case Study - 05

e) Hots - 05

Total Questions - 25

SUBJECT- BIOLOGY

To take 60 questions from each chapter:-

1. Reproduction in Organisms.

2. Sexual Reproduction in flowing plants.

3. Human Reproduction.

4. Reproductive health.

5. Principals of Inheritance and Variation.

The pattern of the question is as follows:-

a) Very Short Answers - 20

b) Short Answers - 10

c) Long Answers - 10

d) Value Based Answers - 10

e) Diagrams - 10

Total Questions - 60

SUBJECT- PHYSICAL EDUCATION

1. Prepare the record file of the following Major Games.

a) Volley Ball

b) Hand Ball

c) Kabaddi

2. Prepare 40 Question with answer from the following chapter.

a) Adventure sports and leadership training.

b) Children and Sports.

c) Sports Medicine.

Following are the pattern of questions:-

a) Very Short Answer Question - 15

b) Short Answers Question - 15

c) Long Questions Question - 10

Total Questions - 40

SUBJECT- PHYSICS

To take 37 questions from each unit:-

Unit 1: Electrostatics.

Unit 2: Current Electricity.

Following are the patterns of question:-

a) Very Short Answer (Conceptual Questions) - 20

b) Five derivations from each units - 05

c) Value based answers - 02 (from each units)

d) Numerical - 10 (from each units)

SUBJECT – CHEMISTRY

UNIT 1 (SOLID STATE)

1. What do you mean by coordination number?

2. What is the percentage of filled and empty space in body centered cubic unit cell?

3. What is the coordination number of onion in a fluorite type structure?

4. Explain the term “dislocation” in relation to crystals.

5. Which point defect may lower the density of an ionic crystal?

6. What are the types of Lattice imperfections found in crystals?

7. On heating crystals of KCl in potassium vapours the crystals start exhibiting a violet colour, why?

8. What other element may be added to silicon to make electrons available for conduction of an electric

current?

9. Distinguish between crystalline and amorphous solids.

10. How the Schottky defect differs from frenkel defect.

11. The two ions A+

and B- have radii 88 and 200 pm respectively. In the close packed crystal of compound

AB, predict the co-ordination number of A+ ion.

12. Define F-centers. Mention some properties of solids which have F-centers in the crystals.

13. What is a semi-conductor? Describe the two main types of semi-conductors and construct their

conduction mechanism.

14. How many types of cubic unit cells are possible? Calculate the number of particles per unit cell of each

type with showing diagrams.

15. What is packing efficiency? Calculate space occupied by:

i) SCC ii) FCC iii) BCC

16. Draw a neat diagram for sodium chloride (Rock Salt) structure and then describe it according.

17. How will you distinguish between tetrahedral and octahedral voids? Show diagrams also.

18. How many Lattice points are there in one unit cell of each of the following Lattice:-

i) SCC ii) BCC iii) FCC

19. Explain- similarities and differences between metallic and ionic crystals.

20. Classify each of the following as being either p-type or n-type semi-conductors

i) Ge doped with In

ii) B doped with Si

21. The radius of Cs+

ion is 169 pm and Cl- ion is 181 pm.

i) Predict the type of crystal structure of CsCl .

ii) In this Crystal where will Cs+

and Cl- ions are located?

iii) What will be the coordination numbers of Cs+

and Cl- ions in this structure?

UNIT 2 (SOLUTION)

1. Define:

i) Mole fraction ii) Molality iii) Molarity

iv) Normality v) Mass percentage vi) Formality

2. What do you understand by colligative properties of solutions (Also write the names and notations of

four types of colligative properties)

3. Define ideal and non-ideal solutions with examples of each.

4. Write four differences between Ideal and Non-ideal solutions.

5. Write four differences between positive deviation and negative deviation Non-ideal solutions. (Giving

one-one example).

6. What is the Vant Hoff‟s factor for a compound? Write three main conditions for it.

7. 2.82 g of glucose are dissolved in 30 g of H2O. Calculate the

i) Molality of solution ii) Mole fraction of glucose and water.

8. Why the vapour pressure of a pure liquid is decreased on a addition of non-volatile solute?

9. Discuss the Raoult‟s Law for

i) Binary solution containing non-volatile solute and

ii) Two miscible volatile liquids (Volatile binary solution)

10. Prove that the relative lowering of vapour pressure is a colligative property of solution.

11. What is reverse osmosis? Give its one use.

12. When fruits and vegetables that have dried are placed in water, they slowly swell and return to original

form, why? Would a temperature increase accelerate the process? Explain.

13. What is the relation between elevation of boiling point and relative lowering of vapour pressure?

14. What is antifreeze solution? Which substance is generally used in it?

15. Calculate Molar mass of non- volatile solute with the help of:-

i) Relative lowering of vapour pressure (a) When solution is NOT DILUTE and (b) When solution

is DILUTE.

ii) Elevation of boiling point.

iii) Depression in freezing point and

iv) Osmatic pressure

16. What is the relative between elevation of boiling point and Osmotic pressure of solution?

17. The freezing point of pure nitrobenzene (C6H5 - NO2) is 278.8 k. When 2.5 g of unknown substance is

dissolved in 100 g of nitrobenzene, the freezing point of solution is found to be 276. 8 k. If the freezing

point depression constant of nitrobenzene is 8.0 k kg mol- 1

, What is the molar mass of unknown

substance?

18. What is the molar concentration of solute particles in the human blood if the osmatic pressure is 7.2 atm

at the body temperature of 37oc? (R= 0.0821 L atm K

-1 mol

-1).

19. Define isotonic solution, hypertonic solution and hypotonic solution.

20. State and define the henry‟s law. Give its applications also.

21. The vapour pressure of pure benzene at a certain temperature is 0.850 bars. 0.5 g non-electrolyte and

non-volatile solid is added to 39.0 g of benzene (Mol. Mass 78 g mol-1

). The vapour pressure of this

solution is found to be 0.845 bar. Calculate the molecular mass of the substance.

22. 1.00 g of a non-volatile solute dissolved in 50 g of benzene by 0.40 k. The freezing point depression

constant of benzene is 5.12 K kg mol-1

. Find the molecular mass of non-volatile solute.

UNIT 3 (ELECTRO CHEMISTRY)

1. What is Electrolyte?

2. Define Strong and weak electrolytes with examples.

3. Write down Ohm‟s law with expression and unit of “R”.

4. What is Standard Electrode Potential?

5. Why is Standard Hydrogen Electrode used as reference electrode?

6. Why is SHE known as reversible electrode? Write cell reactions with cell mechanism.

7. What is electrochemical series? Write main applications of it.

8. How the EMF of the cell is calculated from the half-cell electrode potentials.

9. State the kohlrauch‟s law for electrical conductance of an electrolyte at infinite dilution.

10. Define electrolysis.

11. How does the electrochemical cell differ from electrolytic cell?

12. Explain the working or cell mechanism of Galvanic cell with cell reactions of two half cells with

Labeled diagram of Electrochemical cell.

13. Draw the labeled diagram of denial cell with cell reactions.

14. Depict the electro chemical cell and calculate the Eo

for each cell:

a) 2Ag+

+ Cd 2 Ag + Cd2+

b) Cl2 (g) + 2I-

2 Cl- + I2 (s)

Given Eo

Ag+ / Aq = 0.80 volt

EoCd2+ / Cd = - 0.40 volt

EoCl 2 / Cl

- = 1.36 volt

Eo

I 2 / l-

= 0.54 V

15. Discuss the working (cell mechanism) of H2 – O2 fuel cell with labeled diagram.

16. Discuss the working (cell mechanism) of dry cell with labeled diagram.

17. What is Galvanization? How the corrosion of iron is prevented by galvanization?

18. Following electrochemical cell is set up:

Pt (1) | Fe3+

, Fe2+

(a =1) | | Ce4+

, Ce3+

(a = 1) | Pt (2)

Eo

Fe3+ / Fe2+ = 0.77 V; EoCe4+ / Ce3+ = 1.61 V.

If an ammeter is connected between the two electrodes, predict the direction of flow of current and flow

of electrons?

19. Arrange the following metals in the order in which they displace each other from the solution of their

salts Al, Cu, Fe, Mg and Zn.

20. What is salt bridge? Write two functions of salt bridge.

21. Explain oxidizing substances and reducing substances diving redox reaction.

SUBJECT: ECONOMICS

1. What does the Scope of PPE indicate?

2. “Scarcity and Choice go together” command.

3. What do you mean by the production possibilities of an economy?

4. Distinguish between a centrally planned economy and a market economy?

5. What do you understand by positive economic analysis?

6. What do you understand by normative economic analysis?

7. What is the basic reason for economic problem in all economics?

8. What is meant by economizing resources?

9. Why does an economic problem arise?

10. State two features of resources that give rise to an economic problem?

11. What are the central problems of an economy?

12. What does a rightward shift of production possibility curve indicate?

13. What does increasing marginal opportunity cost along a PPF mean?

14. What are the three central problems of an economy? Why do they arise?

15. How is production possibility curve affected by unemployment in the economy? Explain

16. Define production possibilities curve. Explain why it is download sloping from left to right?

17. What is budget set? Explain what can lead to change in budget set?

18. Define a budget line. When can it shift to the right?

19. State the law of diminishing marginal utility?

20. What is meant by consumer‟s equilibrium?

21. Why does an indifference curve slope downwards?

22. Define marginal utility. State the law of diminishing marginal utility?

23. What is meant by consumer‟s equilibrium? State its condition in case of a single commodity?

24. Explain the conditions of consumer‟s equilibrium with the help of utility analysis?

25. Explain the difference between cardinal utility and ordinal utility. Give example?

26. Define marginal rate of substitution. Explain why is an indifference curve convex?

27. Explain the difference between cardinal ability and ordinal ability, give example.

28. Why is an indifference curve convex towards its origin? Explain.

29. A consumer consumes only two goods. Explain equilibrium with the help of ability approach.

30. Explain the three properties of indifference curves.

31. How is the demand for a good affected by a rise in the prices of other goods? Explain.

32. When a good is called an „inferior good‟?

33. What is meant by complementary goods?

34. What causes an upward movement along a demand curve of a commodity?

35. Give one reason for a shift in demand curve.

36. What is the relation between price of a good and demand of its complementary good?

37. Define charge in quantity demand?

38. What is meant by increase in demand?

39. If price of petrol is expected to increase in future, what will be the effect on its demand in the present

period?

40. Explain the effect of increase in income of the consumer on the demand for a good.

41. Explain the law of demand with the help of a demand schedule.

42. Distinguish between „Change in demand‟ and „Change in quantity demanded‟ of a commodity.

43. Distinguish between expansion between the price of a commodity and its demand and increase in

demand.

44. Explain the inverse relationship between the price of a commodity and its demand.

45. Distinguish between movement along demand curve and shift in demand curve.

46. Distinguish between a normal good and an inferior good. Give example in each case.

47. Distinguish between complementary goods and substitute goods.

48. What is „market‟ demand? State four factors causing „increase in market demand.

49. Define demand. Explain any 4 factors that affect demand for a commodity.

50. Explain in brief, the various exceptions of law of demand.

SUBJECT: COMPUTER SCIENCE

1. Explain the following terminology

a) Relation

b) Domain

c) Tuple

d) Attributes

e) Database

2. Write the deference between Degree and Cardinality.

3. What is DBA? Explain the main role of DBA.

4. What is datatype? Write some SQL datatype.

5. Write the deference between DBMS and RDBMS.

6. Explain the different types of key in the relation model

7. What do you mean by DDL and DML

8. Write a SQL statement to create STUD_INFO table.

9. Write a SQL statement to create EMP_INFO table.

10. What is Relational Algebra in the terms of RDBMS?

SUBJECT: HINDI

x`"e dkyhu vodk’k] x`g dk;Z

1- lapkj fdls dgrs gSa\

2- izeq[k tu lapkj ek/;e dkSu&dkSu ls gSa\

3- tu lapkj ds fofHkUu ek/;e dkSu&dkSu ls gSa Li"V dhft,A

4- la;qDr dazkfr ls vki D;k le>rs gSa\

5- ^Mh* dksfM+x rFkk ,u dksfM+x dks le>kb;sA

6- ix ys[ku%

1- lkoZtfud LFkkuksa ij /kweziku fu"ks/k fu;e ds mYya?ku dks ysdj vius jkT;

ds i;kZoj.k ea=h dks i= fyf[k,A

2- ijhkk ds fnuksa esa c<+ jgs „’kksj o /ofu&iznw"k.k dks fu;af=r djus dh vihy

djrs gq, vius ks= ds Fkkuk/;k dks i= fyf[k,A

SUBJECT: ENGLISH CORE

1. You are the general manager of Brakes and Brakes (India), limited. Only result oriented Smart boys and

girls in the age group of 15 to 25 and with good communication skills will be considered. Salary and

incentives best in the industry. Apply or personally contact: General Manager. Phone: 22110819

2. You have recently started a yoga center for school children. Draft an advertisement to be published in a

local daily about it, giving all relevant details. (Word limit: 50 words )

3. Frame an advertisement to promote the sales of Radha steel tubes and pipes.

4. Your School is organizing a Talent search in music and Dance. As co-coordinator of Cultural activities,

draft a notice in not more than 50 words, inviting the names of those who are interested in the

competition. Also give other school noticeboard. Sign as Uday/ Vijaya of senior secondary school, Agra.

5. You are the president of your school theatre club. Your club is organizing a play “The Miser “to help the

victim of earthquake. Design a poster informing the students about this play. Invent necessary details.

6. Suman/ Suresh have cleared the Pre- Medical Pre- Dental entrance examination. The family is elated at

the achievement and they decide to have a get to gather in not more than 50 words.

7. Your school N.S.S unit organized a Blood Donation Camp. As a member of the N.S.S group, write a

report in 100 – 125 words to be printed in your school magazine.

8. Imagine yourself as Tranz. Write a letter to your friend describing what transpired on the last day of M.

Hamel‟s stay at the school.

9. You are very much concerned about the wastage of money and manpower during elections held

frequently in your country. Write a speech in about 150- 200 words on the urgent need of a stable

government in your country. You are Amit/ Amita.

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NIRMALA ENG. HR. SEC. SCHOOL (CBSE), RISDI, KORBA, CG

SUMMER HOLIDAY ASSIGNMENT 2016-2017

CLASS- 10th

SUBJECT: COMMUNICATIVE ENGLISH

Q.1 Complete the exercise of the following topics in the work book –

1) Tense 2) Determiners

Q.2 Write a speech in about 120 words on the topic –

„Regular health check-up is an important thing for us.

Q.3 You are the president of your school tour section. Write a notice informing all the students of

Class – X and XII regarding a three day tour to Bharatpur. (80 – 100 words)

Q4. Put the following information in the form of a newspaper report on increasing crime rate in

India in about 80- 100 words-

1) Discussion on crime rate 3) Police patrolling and check

2) Crime in India 4) Awareness.

Q.5 As the narrator write an article on the lesson of love, faith and trust that you have learnt

From the two young boys of Verona.

Q.6 As Miss Mebbin, write a letter to young friend telling her how you blackmailed Mrs. Packletide.

Q.7 Write down the character sketches of the novel “The Story of my life “.

Q.8 Answer the following questions:-

a) How was Helen‟s life before she grew blind and deaf?

b) How did Helen cope with life during the first months after her illness?

Q.9 Draw the picture of the frog and the nightingale along with their conversation.

Q.10 Complete the exercise of the MCB - Unit- I [Health and Medicine].

SUBJECT: SOCIAL SCIENCE

Prepare a file on:-

I. Resources and their Development

Role of multi- purpose river valley projects evaluation of positive and negative aspects of

River valley projects.

Case study on one river valley and one local area conservational project.

Narmada Bachao Andolan.

Tehri Dam Andolan.

Rehabilitation of the displaced population environment impact Assessment.

Transition from subsistence to commercial farming change in the cropping pattern in Punjab,

Maharashtra and Tamil Naid

Green Revolution I and II and its impact both positive and Negative.

Type of pollutants.

III effects of different pollutants.

Consequences of pollution study of any local river, factory or land fill.

Development of different types of tourism.

Important destinations of freedom and Indian.

Tourists in at least 2 states of India, Tourism as an upcoming Industry.

Hindrance in the development of tourism in India.

II. Prepare a map work in file:-

Different types of soil found in India along with the states where they are prominent.

SUBJECT: MATHEMATICS

1) State whether 2 + √ is a rational or an irrational.

2) By whether the sum of a rational an irrational of number is rational or irrational?

3) What is fundamental theorem of Arithmetic? Explain with examples.

4) Prove 2 – 3 √ is an irrational number.

5) Show that any positive integer is of the form 8 p, 8p + 2, 8p + 4 and 8p + 6, where p is some integer.

6) Use Euclid division Lemma to find HCF of 255 and 867.

7) The length , breadth and height of a room 8 m 25 cm , 6 m 75 cm and 4 m 50 cm respectively.

Determine the largest rod which can measure these dimensions of the room exactly.

8) Let m = 4 n where n is natural number. Check whether there is any value of n for which 4

n ends

with the digit Zero.

9) Find Zero of the quadratic polynomial 2x2 – 25.

10) If the sum of zeroes of polynomials x2 – αx + b be 5. Find value of α.

11) If two of the zeroes of polynomials f(x) = x4 – 3x

3 – x

2 + 9x – 6 are - √ and √ , Find

remaining two zeroes.

12) If α, β are zero of quadratic polynomial x6 – 6x + a, find the value of „an „if 3α + 2β = 2.

13) What must be added to f (x) = 4x4 + 2x3 – x

2 + x + 1, so that the resulting polynomial is divisible

By g(x) = x2 + 2x – 3.

14) If -1 and 2 are two zeroes of the polynomial 2x3 – x

2 – 5x – 2. Find its third zero.

15) If ( 2 + √ ) and ( 2- √ ) are two zeroes of polynomial x4 – 6x

3 – 26x

2 + 138x – 35, find remaining

two zeroes.

16) If (x + a) is a factor of 2x2 + 2ax + 5x + 10. Find a.

17) If α, β are zero of polynomial f(x) = 2x2 + 5x + 2, find the polynomial whose zeroes are

.

18) Divide (2x2 + x – 20) by ( x + 3) and verify division algorithm.

19) If α and β are the zero of polynomials x2 + 7x + 12 then find the value of

. - 2αβ.

SUBJECT: PHYSICS

Q. A Very short answer type questions

1) State the formula correlating the electric current flowing in a conductor and the applied voltage.

2) Name the S.I. unit of resistance & specific resistance.

3) Name the metal which is the best conductor of electricity.

4) On increasing the temperature of a conductor what would be the effect on its resistance.

5) Which has high resistance, a thick wire or a thin wire?

6) Which quantity is equal to reciprocal of slope V – I curve for conductors?

7) Why are the coils of electric iron and electric toasters made of an alloy rather than a pure metal?

8) On what factor does the resistance of a conductor depend?

9) On what factor does the resistivity of a substance depend?

10) Two wires of same area of cross- section are given, one is smaller and other is longer. Which one

Have greater resistance?

Q.B Short answer type questions.

1) How is the current affected if the potential difference across the end of a conductor is

(i) Halved (ii) Doubled.

2) Define 1 Ohm and state the limitations of Ohm‟s laws

3) On the basis of electrical resistance, how you can distinguish between a conductor and insulator.

4) Which of the following has higher resistivity constantan or copper?

5) What are super- conductors?

6) In parallel combination and series combination of resistor, which quantity remains same for each resistor?

7) If 4 resistors of 4 Ohm are joined in series then in parallel, than what will be their equivalent resistance.

8) Observe the given circuit diagram carefully and answer the questions given below.

a) What are the currents drawn by leased and highest of three resistors?

b) What is current drawn by the 12 Ω resistor?

c) What would be the reading of ammeter?

9) Prove that

= n

2 for an equal resistance connected on series and parallel?

Q. C Very short answers Questions:-

1) Name a safety device used in electric circuit?

2) Name the substance used to make the filament of an electric bulb?

3) Name three different effects of electric current.

4) What do you mean when we say that a bulb is 100 watt?

Q. D Long answer questions.

5) On the basis of Joule‟s law of heat production obtain an expression for heat produced in a

Conductor during the flow of current through it?

6) What is an electric power? Obtain an expression for it. Write its S.I unit and define one watt?

7) (a) The values of “V “versus I flowing in the resistor are given below.

Potential difference V ( In volt ) 2 4 6 8 10

Current I ( In ampere ) 0.5 1.0 1.5 2.0 2.5

Plot a graph between V and I and calculate the resistance of the resistor.

(b) Name the law which is illustrated by the above V- I graph.

(c) State the factors affecting the resistance of a conductor and how?

(d) What are the limitations of ohm‟s law?

SUBJECT: COMPUTER

1. Write the web extensions of some website of some organization

2. Explain briefly about the evolution of internet.

3. Identify domain name of some website as either commercial organization.

4. Write advantages and disadvantages of Information Technology

5. Explain Client- Server model.

SUBJECT -HINDI

x`"e dkyhu vodk’k] x`g dk;Z

1- lkfgR; ij of.kZr jlksa ij dk;Z&izi=A

2- Lora=rk laxzke esa ’kkfey gksus okys Lora=rk lsukfu;ksa ds uke rFkk muls tqM+h

,d ?kVuk dk o.kZu dhft,A

3- xkoksa dh izkd`frd laqnjrk dk o.kZu djrs gq, iwoZ dh xzkE; laLd`fr vkSj orZeku

xzkE; laLd`fr esa ifjorZu fn[kkbZ,AA

SUBJECT: BIOLOGY

1. How does exchange of gases occurring in plants?

2. Name the stored food of animals?

3. Name the component of food not digested in stomach?

4. Mention the size of complete digestion of carbohydrate proteins, fats in humans?

5. Name the enzymes present in pancreatic juice?

6. Which enzyme present in saliva breaks down starch?

7. What is the role of acid in our stomach?

8. Where do plants get each of raw materials required for photosynthesis?

9. Where does digestion of fat takes place in our body?

10. Mention how organism like bread and mould obtain their food?

11. State one difference between autotrophic and heterotrophic mode of nutrition?

12. What is the role of saliva in the food?

13. Stomata of deserts plants remain closed during the daytime? How do they take up co2 and perform

photosynthesis?

14. Explain the significance of peristaltic movement that occurs all along the gut during digestion?

15. State any two function of guard cell that surround through stomata?

16. Name the three different glands associated with the digestive system of a man. Also name their

secretion?

17. Mention the role following in digestion. Pepsin, saliva villi, bile juice.

18. Name the role of each of the following?

19. Why does a piece of bread taste sweet when chewed for sometime

20. Write the difference between holozoic and saprophytic nutrition. Give two example

21. Explain the statement “Bile does not contain an enzyme but it is essential for digestion?

22. State the role of liver and pancreas?

23. Draw the cross section of the leaf and label the following parts. 1) upper epidermis, chloroplast

vascular bundle , xylem and phloem

24. Draw a diagram of human alimentary canal and label it, Gall bladder, liver, pancreas small intensine

, Buckle cavity ,large intestine .

25. What is the emulsification of fat? Why it is necessary?

SUBJECT: CHEMISTRY

1. Write a balanced equation for a chemical reaction that can be characterized as precipitation?

2. Name the law which is kept in mind while balancing the equation.

3. Oxidation and reduction process occurs simultaneously justify the statement with the help of an

example?

4. Barium chloride reacts with aluminum sulphate to give aluminum chloride and precipitate of barium

sulphate” Translate above the equation?

5. Design an activity to show decomposition reaction in which light is used to decompose a reactant. Write

chemical equations?

6. What is meant by thermal decomposition reaction? Example with an example?

7. Why do we store silver chloride in dark color red bottles? Brief

8. What is redox reaction? Identify the substance oxidized and reduced in the following reaction

9. i) What will you observe when Zinc is added to a solution of iron

ii) Sulphate name the type of reaction and write the chemical equation?

10. A manganese ribbon is burnt in oxygen to give a while compound „X‟ accompanied by emission of

light?

11 A small amount of ferrous sulphate was heated in hard glass tube

a) Write the equation involved in the above equation?

b) What type of reaction is taking place?

12. A metal is treated with dil. H2SO4. The gas is evolved is collected by the method shown in the figure.

a) Name the gas.

b) Name the method of collection of gas.

c) Is the gas soluble or insoluble in water?

d) Is the gas lighter or heavier than air?

13.

a) Explain why respiration is an exothermic reaction

b) When blue salt of copper sulphate is heated, it becomes colourless.

14

a) What happens chemically when quick lime is added to water?

b) Write the chemical equation in balanced form?

c) What is decomposition reaction? Explain it with suitable examples.

15. Name the phenomenon due to which the taste and smell of oily food changes when kept for a long time

suggest one method to prevent it.

16. In the electrolysis of water

a. Name the gas collected at cathode and anode respectively.

b. Why is the volume of one gas collected tone electrode double than at the other? Name this gas?

How will you get test evolved gas?

17. Identify the type of reaction from the following equation?

18 Complete the following reaction

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NIRMALA ENG. HR. SEC. SCHOOL (CBSE), RISDI, KORBA, CG

SUMMER HOLIDAY ASSIGNMENT 2016-2017

CLASS- 9th

SUBJECT: SOCIAL SCIENCE

I. Internal Questions (Prepare it in file)

a. Although the latitudinal and longitudinal extent of the mainland is about 30° the east west extent appears

to be smaller than the north south extent why?

b. Why the difference between the duration of is day and night hardly felt at kanyakumari but not so in

Kashmir?

c. Why India is called a sub-continent? Name the countries that comprise the Indian sub-continent.

II. On the map outline of India

Ran of Kachchh, Palk Strait, Sri Lanka, Gulf of Mannar, Andaman & Nicobar Islands, Standard

meridian and Tropic of Cancer.

III. Activity page 18.

Describe the persons represented in fig-1.4 their actions, their postures, the objects they are carrying.

Look carefully to see whether all of them come from the same social group.

IV. Fill up the following table showing the name of the crop, months sown, month harvested and source of

irrigation.

V. Draw the fig-1.4, given in the page 4, showing the types of modern farming used in India.

SUBJECT: PHYSICS

A. Very Short Answer Questions:

1. Is displacement is a scalar quantity, why?

2. What is the S.I unit of acceleration?

3. What does speedometer of a vehicle measure?

4. What is the relation between km/hr. and m/s?

5. If a body covers a three equal distances with speeds , and then what is the average

speed of the body?

6. What is the nature of a speed –time graph for uniform motion?

7. Draw a position time graph of a body at rest 5m?

8. What is the nature of motion of a body about the following graph

Speed Velocity

Time Time

B. Short Answer Questions:

1. A farmer moves along the boundary of a square field of side 10m in 40 sec. What will be the

magnitude of displacement of the farmer on the end of 2 min in 20sec?

2. Draw the distance time graph for body at rest, constant speed and variable speed.

3. Draw the speed time graph for constant speed, constant acceleration, constant retardation and

non-uniform acceleration?

4. From the distance –time graph given, find a) average speed b) the distance travelled between 2

sec and 5 sec?

7 Distance

6

5

4

3

2

1

Time

1 2 3 4 5 6 7

5. A car travelling at a speed of 10m/s, stop in 4 sec after the application of brakes. If we assume

the retardation to be constant.

a) Draw a speed time graph for the above information?

b) Find the retardation?

6. Interpret the following graph and assume the following?

a) find acceleration between i) A to B ii) B to C iii) C to D

b) The average speed for the complete journey (1 to 7s)

Speed (m/s)

20 C

B

10

M A

0 1 2 3 4 5 6 7 8

A M N D

t (s)

C. Short Answer Questions:

1. Two lines are shown for motion of bodies A and B which has greater speed?

Distance

A

B

Time

2. Derive the equation of motion for uniformly accelerated motion by Graphical method?

a)

b)

c) 3. A body moves on a circular path of radius 1m. It completes one circle in 2sec. Find its speed and

find its distance and displacement?

SUBJECT: MATHS

1. Short Answer Questions:

a) Represent √ on the number line.

b) simplify √

√ √

√

√ √

2. find the value of:

a) ( √ √ ) √ √

b) √ √

3. Represent √ on the number line.

4. find two rational numbers between

5. Visualize the number 5.37 on the number line?

Long Answer Questions:

1. √

√ √

√

√ √

√

√ √

2. Find the value of √

√

√

√ √

3. Rationalize the denominator of

√ √

HOTS

1. Simplify

2. (

)

(

)

(

)

VALUE BASED QUESTIONS:

1. In a “cleanliness programme” the residents of a certain locality joined together to clean the

neighborhood area, the clean area is given by √ √ squares meters.

a) Find the cleaned area?

b) What value has been depicted here?

2. Project

Some short cut methods of calculation from Vedic mathematics

SUBJECT: ENGLISH

1. India has been led under the stewardship of 14 Prime Ministers since independence. Whom do you

admire the most? Prepare a biography of the person based on your research. (To be able to do this, you

should have sufficient knowledge of the person)

2. Your school uniform says a lot about your school. Describe it in detail. Begin with the significance of

uniforms. Go into every relevant detail and explain them?

3. The neighborhood vegetable–seller whom your mother usually buys her vegetables from is illiterate. His

wife back home in the village is unwell. She lives with her parents and children. He is unable to go to

her and fells guilty about it. He requests you to write a letter to his wife enquiring about her health and

telling her about his inability to go home at this point. Write the letter for him?

4. A stray dog lives across the street. It has a pup which is obviously very sick. Yet it nurses the pup

devotedly and looks around for food to feed it. You are struck by the maternal instincts in even animals.

Write a diary entry about what you saw and felt.

5. Write a book review on the novel

„Three men on the boat „.

6. Complete the exercises of the first unit of MCB.

7. Complete the first unit of workbook.

8. Draw the picture of a computer and label the different parts of the computer in complete sentences. You

will require using determiners for this. Underline the determiners used by you.

SUBJECT: COMPUTER

1. Write the major components of central processing unit and its uses.

2. Write the difference between RAM and ROM.

3. Compare out desktop, Laptop, PDA.

4. Assume that your friend wants to buy a computer system for studying, which computer you will suggest

to buy?

5. Give one reason why a digital camera is suitable for obtaining pictures for a multimedia presentation.

SUBJECT: HINDI

x`"e dkyhu vodk’k] x`g dk;Z

1- fdlh ukf;dk kjk flj ls ysdj iSj rd igus tkus okys vkHkw"k.kksa dk lfp=

o.kZuA

2- iapra= ij vk/kfjr fdlh ,d ekuoh; dFkk dk o.kZu dhft,A

3- dchjnkl th dh lEiw.kZ thou ifjp; crkrs gq, mudh vU; nks dforkvksa dk

o.kZu dhft,A

SUBJECT: BIOLOGY AND CHEMISTRY

1. Who proposed cell theory?

2. Define eukaryotic organism?

3. Define diffusion?

4. Who proposed the fluid mosaic model of plasma membrane?

5. What is osmosis?

6. What is the difference between diffusion and osmosis?

7. What would happen to the life of a cell if there was no Golgi apparatus?

8. How do substance like co2 and water move in or out of the cell? Discuss?

9. What would happen if plasma membrane raptures or break down?

10. Write the difference between solids, liquids and gas

11. Define Rigidity

12. What is the melting point of ice?

13. What is the hidden energy called?

14. What is sublimation? And what are the applications of sublimation?

15. What is the physical state of water of water at 250°C & 100°C?

16. Suggest a method to liquefy atmospheric gases?

16. What is evaporation?

17. How do surface area is related to evaporation?

18. What is the difference between evaporation and boiling?

19. Why does a desert cooler cool better on a hot dry day?

20. How the speed of wind is related to evaporation?

21. Why the speed of wind is related to evaporation?

22. What type of clothes should we wear in summer?

23. Why are we able to sip hot tea or milk faster from a saucer than a cup?

24. Give reasons for the following observations:

a) Naphthalene balls disappear with time without leaving any solid?

b) We can get the smell of perfume sitting several meters away?

c) Water at room temperature is liquid?

Osmosis is a special kind of diffusion comment?

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